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Theory of Machine

Theory of Machine
Relationship between the number of links (L) and number of pairs (P) is

P = 2L - 2
P = 2L + 4
P = 2L + 2
P = 2L - 4

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Theory of Machine
To transmit power from one rotating shaft to another whose axes are neither parallel nor intersecting, use?

Spur gear
Worm gear
Spiral gear
Bevel gear

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Theory of Machine
The sense of Coriolis component is such that it

Leads the sliding velocity vector by 180°
Leads the sliding velocity vector by 90°
Is along the sliding velocity vector
Lags the sliding velocity vector by 90°

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Theory of Machine
The velocity of sliding of meshing gear teeth is(Where ω₁ and ω₂ are angular velocities of meshing gears and ‘y’ is distance between point of contact and the pitch point)

(ω₁ + ω₂) y
(ω₁ × ω₂) y
(ω₁/ω₂) y
(ω₁ + ω₂)/y

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Theory of Machine
The Bifilar suspension method is used to determine

Centripetal acceleration
Position of balancing weights
Moment of inertia
Natural frequency of vibration

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Theory of Machine
The ratio of the driving tensions for V-belts is __________ times that of flat belts.(Where β = Semi-angle of the groove)

cosβ
sinβ
secβ
cosecβ

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